Z86L972 Datasheet, PDF(6/91 Page) Zilog, Inc. – Low-Voltage Microcontrollers

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Z86L972 Datasheet, PDF (6/91 Pages) Zilog, Inc. – Low-Voltage Microcontrollers

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Z86L972/Z86L973/Z86L974

Low-Voltage Microcontrollers

List of Tables

Table 1. Z86L972/Z86L973/Z86L94 Comparison . . . . . . . . . . . . . . . . . . . . . . 1

Table 2. Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 3. Interrupt Types, Sources, and Vectors . . . . . . . . . . . . . . . . . . . . . . 14

Table 4. Interrupt Edge Select for External Interrupts . . . . . . . . . . . . . . . . . . 16

Table 5. Control and Status Register Reset Conditions . . . . . . . . . . . . . . . . 19

Table 6. Clock Status in Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table 7. Special Port Pin Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Table 8. Active Glitch/Filter Specifications (Preliminary) . . . . . . . . . . . . . . . . 27

Table 9. Current Sink Pad P43 Specifications (Preliminary) . . . . . . . . . . . . . 28

Table 10. I/O Port Registers (Group 0, Bank 0, Registers 0âF) . . . . . . . . . . . 47

Table 11. Timer Control Registers (Group 0, Bank D, Registers 0âF) . . . . . . 48

Table 12. Control and Status Registers (Group F, Bank 0,

Registers 0âF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Table 13. SMR and Port Mode Registers (Group 0, Bank F,

Registers 0âF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Table 14. Register Description Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Table 15. FLAGS Register [Group/Bank F0h, Register C (R252)] . . . . . . . . . . 52

Table 16. RP Register [Group/Bank F0h, Register D (R253)] . . . . . . . . . . . . . 53

Table 17. SP Register [Group/Bank F0h, Register F (R255)] . . . . . . . . . . . . . 54

Table 18. LB Register (Group/Bank 0Dh, Register C) . . . . . . . . . . . . . . . . . . . 55

Table 19. IMR (Group/Bank 0Fh, Register B) . . . . . . . . . . . . . . . . . . . . . . . . . 56

Table 20. IPR (Group/Bank 0Fh, Register 9) . . . . . . . . . . . . . . . . . . . . . . . . . 57

Table 21. IRQ (Group/Bank 0Fh, Register A) . . . . . . . . . . . . . . . . . . . . . . . . . 58

Table 22. P456CON Register (Group/Bank 0Fh, Register 0) . . . . . . . . . . . . . 60

Table 23. P2 Register [Group/Bank 00h, Register 2 (R2)] . . . . . . . . . . . . . . . 61

Table 24. P2M Register [Group/Bank F0h, Register 6 (R246)] . . . . . . . . . . . . 61

Table 25. P3M Register [Group/Bank F0h, Register 7 (R247)] . . . . . . . . . . . . 61

Table 26. P4 Register [Group/Bank 00h, Register 4 (R4)] . . . . . . . . . . . . . . . 62

Table 27. P4M Register (Group/Bank 0Fh, Register 2) . . . . . . . . . . . . . . . . . . 62

Table 28. P5 Register [Group/Bank 00h, Register 5 (R5)] . . . . . . . . . . . . . . . 63

Table 29. P5M Register (Group/Bank 0Fh, Register 4) . . . . . . . . . . . . . . . . . . 63

Table 30. P6 Register [Group/Bank 00h, Register 6 (R6)] . . . . . . . . . . . . . . . 64

Table 31. P6M Register (Group/Bank 0Fh, Register 6) . . . . . . . . . . . . . . . . . . 64

Table 32. T1 Register [Group/Bank F0h, Register 2 (R242)] . . . . . . . . . . . . . 65

PS010504-1002

PRELIMINARY

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